破釜沉舟 (pò fǔ chén zhōu)
In the late years of the Qin Dynasty (qín cháo 秦朝,221 – 206BC), Xiang Yu ( xiàng yù 项羽) launched a rebellion. After crossing the Zhang River (zhāng hé 漳河), Xiang Yu ordered his soldiers to sink all the boats and break their cooking pots. He distributed each soldier three days’ rations and warned them that there was no way return; the only thing they could do to survive was to fight against the enemy. After nine furious wars, the Qin army was finally defeated. This idiom is used to reveal one’s strong determination to achieve one’s goal at any cost.